package com.cn.wanxi.servlet.user;

import com.alibaba.fastjson.JSON;
import com.cn.wanxi.result.ResultModel;
import com.cn.wanxi.model.UserModel;
import com.cn.wanxi.service.UserService;
import com.cn.wanxi.service.impl.UserServiceImpl;
import com.cn.wanxi.util.Tool;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/back/user/findById")
public class UserFindByIdServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//         1.如果前端传递中文时，可以会出现乱码
        req.setCharacterEncoding("UTF-8");
        resp.setCharacterEncoding("UTF-8");
        //        2.要得到前端的数据
        String id = req.getParameter("id");
        //        3.封装model
        UserModel userModel = new UserModel();
        userModel.setId(Tool.stringToInt(id));
//        4.调用服务逻辑层
        UserService userService = new UserServiceImpl();
        //        5.得到统一的返回值对象
        ResultModel resultModel = userService.findById(userModel);
        //       6.将数据返回给前端页面
        resp.getWriter().println(JSON.toJSONString(resultModel));
    }
}
